<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <ul
          class="cart-list"
          v-for="cartInfo in cartInfoList"
          :key="cartInfo.skuId"
        >
          <li class="cart-list-con1">
            <input
              type="checkbox"
              name="chk_list"
              :checked="cartInfo.isChecked === 1"
              @click="getCheckCart(cartInfo.skuId, $event)"
            />
          </li>
          <li class="cart-list-con2">
            <img :src="cartInfo.imgUrl" />
            <div class="item-msg">{{ cartInfo.skuName }}</div>
          </li>
          <li class="cart-list-con4">
            <span class="price">{{ cartInfo.cartPrice }}</span>
          </li>
          <li class="cart-list-con5">
            <a
              href="javascript:void(0)"
              class="mins"
              @change="changeNum(cartInfo.skuId, -1, cartInfo.skuNum, $event)"
              >-</a
            >
            <input
              autocomplete="off"
              type="text"
              minnum="1"
              class="itxt"
              :value="cartInfo.skuNum"
              @change="changeNum(cartInfo.skuId, 0, cartInfo.skuNum, $event)"
            />
            <a
              href="javascript:void(0)"
              class="plus"
              @click="changeNum(cartInfo.skuId, 1, cartInfo.skuNum, $event)"
              >+</a
            >
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{ cartInfo.cartPrice * cartInfo.skuNum }}</span>
          </li>
          <li class="cart-list-con7">
            <a
              href="#none"
              class="sindelet"
              @click.prevent="deleteCart(cartInfo.skuId)"
              >删除</a
            >
            <br />
            <a href="#none">移到收藏</a>
          </li>
        </ul>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input class="chooseAll" type="checkbox" :checked="allChecked" @change="changeGoodChecked"/>
        <span>全选</span>
      </div>
      <div class="option">
        <a href="#none" @click.prevent="deleteCheckedGood">删除选中的商品</a>
        <a href="#none">移到我的关注</a>
        <a href="#none">清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">已选择 <span>0</span>件商品</div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{ allPrice }}</i>
        </div>
        <div class="sumbtn">
          <router-link class="sum-btn" to="/trade">结算</router-link>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
const throttle = require("lodash/throttle.js");
export default {
  name: "ShopCart",
  mounted() {
    this.$store.dispatch("cartList");
  },
  computed: {
    cartInfoList() {
      return this.$store.getters.cartList.cartInfoList || [];
    },
    allPrice() {
      let sum = 0;
      this.cartInfoList.forEach(function (value) {
        if (value.isChecked === 1) {
          sum = sum + value.skuPrice * value.skuNum;
        }
      });
      return sum;
    },
    allChecked() {
      if(this.cartInfoList.length === 0) return false
      for(let i = 0; i < this.cartInfoList.length; i++) {
        if(this.cartInfoList[i].isChecked !== 1) {
          return false
        }
      }
      return true
    },
  },
  methods: {
    changeNum: throttle(function(skuId, control, skuNum, e) {
      switch (control) {
        case -1:
          if (skuNum > 1) {
            this.$store
              .dispatch("addToCart", {
                skuId: skuId,
                skuNum: -1,
              })
              .then(() => {
                this.$store.dispatch("cartList");
              });
          }
          break;
        case 1:
          this.$store
            .dispatch("addToCart", {
              skuId: skuId,
              skuNum: 1,
            })
            .then(() => {
              this.$store.dispatch("cartList");
            });
          break;
        case 0:
          if (isNaN(e.target.value * 1) || e.target.value * 1 < 1) {
            this.$store
              .dispatch("addToCart", {
                skuId,
                skuNum: 0,
              })
              .then(() => {
                this.$store.dispatch("cartList");
              });
          } else {
            this.$store
              .dispatch("addToCart", {
                skuId,
                skuNum: parseInt(e.target.value) - skuNum,
              })
              .then(() => {
                this.$store.dispatch("cartList");
              });
          }
      }
    }, 500),
    deleteCart(skuId) {
      this.$store
        .dispatch("delCart", skuId)
        .then(() => {
          this.$store.dispatch("cartList");
        })
        .catch(function (error) {
          console.log(error);
        });
    },
    getCheckCart(skuId, e) {
      let isChecked = e.target.checked ? 1 : 0
      this.$store.dispatch('checkCart', {
        skuID: skuId,
        isChecked
      }).then(() => {
        this.$store.dispatch('cartList')
      }).catch((error) => {
        console.log(error)
      })
    },
    deleteCheckedGood() {
      let promiseAll = []
      for(let i = 0; i < this.cartInfoList.length; i++) {
        if(this.cartInfoList[i].isChecked === 1) {
          promiseAll.push(this.$store.dispatch('delCart', this.cartInfoList[i].skuId))
        }
      }
      Promise.all(promiseAll).then(() => {
        this.$store.dispatch('cartList')
      })
    },
    changeGoodChecked(e) {
      let promiseAll = []
      let isChecked = e.target.checked ? 1 : 0
      for(let i = 0; i < this.cartInfoList.length; i++) {
        promiseAll.push(this.$store.dispatch('checkCart', {
          skuID: this.cartInfoList[i].skuId,
          isChecked
        }))
      }
      Promise.all(promiseAll).then(() => {
        this.$store.dispatch('cartList')
      })
    }
  },
};
</script>

<style lang="less" scoped>
.cart {
  width: 1200px;
  margin: 0 auto;

  h4 {
    margin: 9px 0;
    font-size: 14px;
    line-height: 21px;
  }

  .cart-main {
    .cart-th {
      background: #f5f5f5;
      border: 1px solid #ddd;
      padding: 10px;
      overflow: hidden;

      & > div {
        float: left;
      }

      .cart-th1 {
        width: 25%;

        input {
          vertical-align: middle;
        }

        span {
          vertical-align: middle;
        }
      }

      .cart-th2 {
        width: 25%;
      }

      .cart-th3,
      .cart-th4,
      .cart-th5,
      .cart-th6 {
        width: 12.5%;
      }
    }

    .cart-body {
      margin: 15px 0;
      border: 1px solid #ddd;

      .cart-list {
        padding: 10px;
        border-bottom: 1px solid #ddd;
        overflow: hidden;

        & > li {
          float: left;
        }

        .cart-list-con1 {
          width: 15%;
        }

        .cart-list-con2 {
          width: 35%;

          img {
            width: 82px;
            height: 82px;
            float: left;
          }

          .item-msg {
            float: left;
            width: 150px;
            margin: 0 10px;
            line-height: 18px;
          }
        }

        .cart-list-con3 {
          width: 20.8333%;

          .item-txt {
            text-align: center;
          }
        }

        .cart-list-con4 {
          width: 10%;
        }

        .cart-list-con5 {
          width: 17%;

          .mins {
            border: 1px solid #ddd;
            border-right: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }

          input {
            border: 1px solid #ddd;
            width: 40px;
            height: 33px;
            float: left;
            text-align: center;
            font-size: 14px;
          }

          .plus {
            border: 1px solid #ddd;
            border-left: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }
        }

        .cart-list-con6 {
          width: 10%;

          .sum {
            font-size: 16px;
          }
        }

        .cart-list-con7 {
          width: 13%;

          a {
            color: #666;
          }
        }
      }
    }
  }

  .cart-tool {
    overflow: hidden;
    border: 1px solid #ddd;

    .select-all {
      padding: 10px;
      overflow: hidden;
      float: left;

      span {
        vertical-align: middle;
      }

      input {
        vertical-align: middle;
      }
    }

    .option {
      padding: 10px;
      overflow: hidden;
      float: left;

      a {
        float: left;
        padding: 0 10px;
        color: #666;
      }
    }

    .money-box {
      float: right;

      .chosed {
        line-height: 26px;
        float: left;
        padding: 0 10px;
      }

      .sumprice {
        width: 200px;
        line-height: 22px;
        float: left;
        padding: 0 10px;

        .summoney {
          color: #c81623;
          font-size: 16px;
        }
      }

      .sumbtn {
        float: right;

        a {
          display: block;
          position: relative;
          width: 96px;
          height: 52px;
          line-height: 52px;
          color: #fff;
          text-align: center;
          font-size: 18px;
          font-family: "Microsoft YaHei";
          background: #e1251b;
          overflow: hidden;
        }
      }
    }
  }
}
</style>